Enrollment in City College in 1980 was ~$83\frac{1}{3}$~ percent of enrollment in 1990. What was the percent increase in the college’s enrollment from 1980 to 1990?
10%
~$16\frac{2}{3}$~%
20%
25%
~$183\frac{1}{3}$~%
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（1－83⅓%）/83⅓% =1/5 注意是percent
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（1－83⅓%）/83⅓% =1/5
注意是percent
登录 或 注册 后可以参加讨论